@book { DerivateaufStrom,
    title = "Derivate auf Strom",
    author = "Lars {Dürdoth}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832431990",
    url = "https://m.diplom.de/document/218893"
}